#include <stdio.h>
void function1(void);//prototype/declaraton
int function2(); //prototype/declarato
int main(void)
{
	int r;
	function1();
	r = function2("function 2",2);
}

//func definition/implementation
void function1(void)
{
	printf("This is my funciton1.\n");
}

int function2() //prototype/declarato
{
	int num = 10;
	printf("This is a number %d in funciton2.\n", num);
	return num;
}
